Cutting down on coffee

I drink 4 to 5 cups of coffee a day. Coffee has become an unavoidable part of my life.

I have faced acne since childhood. I have been getting occasional acne now. But for past few months the acne as getting worse.

I consulted this dermatologic clinic near my home and the dermatologist said it's my coffee habit that is causing the acne to worsen. He told me to cut down the coffee gradually. It's going to be very difficult for me.

Has anyone done this before? If yes, how did you do it? Please give tips. Thanks